of same



No. 617,439. Patented lan. l0, |899. W. D. FORSYTH & E. T. BELL.

BnlLER TUBE CLEANER.

(Appucationlled .rm 14, 189s.)A

(No Model.)

Witnesses.

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UNITED STATES PATENT OEEVICE.v

VILBER D. FORSYTH AND ENOS T. BELL, OF PITTSBURG, PENNSYLVANIA,ASSIGNORS TO THE UNION BOILER TUBE CLEANER COMPANY, OF SAME PLACE.

BOILER-TUBE CLEANER.

SPECIFICATION forming part of Letters Patent No. 617,439, dated January10, 1899. Application iiled Januaryll, 1898. Serial No. 666,695. (Nomodel.)

To all whom it may concern.-V

Beit known that we, WILBER D. FORSYTH and ENOS T. BELL, citizens of theUnited States, and residents of Pittsburg, in the county of Alleghenyand State of Pennsylvania, have invented certain new and usefulImprovements in Boiler-Tube Cleaners; and we do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

Figure l of the drawings is a side elevation of a boiler-tube cleanerembodying our invention. Fig. 2 is an end view of theA same. Fig. 3 is asection on the line :c x, Fig.v 1. Fig. 4 is an end View of the shell Bwith the motor-wheel removed. Fig. 5 is a longitudinal central section.Fig. 6 is a side View showing a diierent form of cleaner-head.

This invention has relation to that class of boiler-tube cleaners whichare combined lwith and driven by a water-motor carried through the tubebeing cleaned therewith; and it is designed to provide a cleaner-head ofnovel and efficient character and one which isso related to the motor asnot to break the rotary force of the water after the latter leaves themotor and before it passes by the cleaner-head. In prior devices of thiskind with which we are familiar there are obstructions of various kindsbetween the motor and the cleaner devices, which act to check the rotarymotion of the water discharged from the motor, the consequence beingthat this dead-water is picked up by the cleaner-head in passing thesame and is rotated, with the effect of checking the power and speed ofthe device. This we particularly wish to avoid and overcome.

With these objects in view the invention consists in the novelconstruction and combination of parts, all as hereinafter described, andpointed out in the appended claim.

Referring to the accompanying drawings, the letter A designates ahollowshaft or shaftsection. B is a cylindrical shell which is iirmly screwedor otherwise secured upon an end of the said shaft by means of a tubularl extension B. This shell contains therein a closed water-chamber O andan open motorchamber C', the forward wall of the former constituting theinner or bottom wall of the latter, said wall having therein a number ofsmall oblique water-passages c. D designates a spindle which is fixedcentrally in the wall C and which projects some distance beyond theforward end of the shell. F designates the motor-Wheel, which is fittedto turn snugly but freely in the chamber C'. This wheel is formed with acentral hub portion f, surrounded upon its rear side by an annularchamber f', and with an annular 'peripheral portion having therethrougha se ries of water-passages G. These water-passages are separated by theintegral portions G', which constitute the wings or blades of the wheel.The particular construction of the said wheel and of the Walls g g g ofsaid passages forms no part of the present invention, but constitutesthe subject-matter of a divisional application to be iiled by us.

H is the cleaner-headwhich is rigidly contor-wheel and the cleaner-headand forms a simple and secure' 'means of connection, while at the sametime it permits the parts to be readily separated for repairs, dac. Thishead in the form shown consists of a wheel having an annular rimportion, which is con nected with the hub portion by spider-arms.Projecting from the forward face of the rim portion are a number ofstuds J, (in the present instance five,) to which are pivotedcutter-carrying arms K, capable of a limited movement in planes parallelwith the said wheel. These arms are slotted at their free end portions,and journaled in these slots are toothed or serrated cutter-wheels L.These arms and cutter-wheels are similar in general character andoperation to the corresponding devices described and claimed in '26,1896, to which reference may be had.

If desired, we may employ two or more of these cutter-carrying wheels,arranged one in IOC advance ofthe other, as shown. In such event suchwheels are preferably of gradually-in creasing diameter from the frontto the rear one.

M designates guide-bars which are disposed around t-he hollow shaft A,their forward ends being secured in lugs on the shell B and their rearends to lugs of a collar or ring N on said shaft.

It will be observed that the forward face of the motor-wheel issuficently near the open end of the chamber C so that the waterdischarged therefrom is discharged clear of the case or shell and iscaused to strike directly and with force the walls of the tube beingcleaned, and thereby assists the operation to a very considerable extentby removing the loosened or disintegrated scale and carrying it away. Itwill further be seen that there is no obstruction of any kind betweenthe motor-wheel and the cleaner-head and its wheels to check the rotarymotion of the water discharged from said wheel. Consequently the waterpasses the head and its cutter-Wheels under this rotary motion, and wethereby avoid the presence of dead-water around said wheels.

Having thus described our inventiomwhat we claim as new, and desire tosecure by Letters Patent, is-

In a boiler-tube cleaner of the character described, the combinationwith the shell or case having the motor-chamber therein, the fixedspindle extending centrally through the said chamber and beyond theforward end of the case or shell, and a motor-wheel journaled on saidspindle and having an. extended threaded boss, of a cutter-headcomprising an extended hub portion, a solid rim portion, and anintermediate skeleton or open portion cutting devices loosely connectedto said rim portion, and a sleeve journaled on said spindle and screwedrespectively to the extended boss of the motor-Wheel and the extendedhub portion of the cleaner-head, the space between the wheel and headbeingotherwise unobstructed, substantially as specified.

In testimony whereof we affix our signatures in presence of twowitnesses.

WILBER D. FORSYTII. ENOS T. BELL.

Witnesses:

Jos. Gr. ORMsBY, A. E. DENNIS.

